Likely BECE Integrated Science Questions & Answers- November 18th, 2021: If you are looking for BECE Integrated Science Questions & Answers, then you are on the right page.
On this page, we are going to give you some of the BECE integrated science that is likely to appear in your science exams tomorrow. These question are samples from the previous year’s exams and students are advised to study them as such.
Table of Contents
Question 1
(a) (i) What do the symbols L, N, and E represent in an electric plug?
(ii) What is the function of the fuse box in household electrical wiring?
(b) Mention four classes of insect pest based on their feeding habits
(c) Classify the first four elements of the periodic table as metals and non-metals
(d) Name the three types of blood vessels in humans
Answers
(a) (i) What the symbols L, N and E represent in an electric plug
L – live pin
N – neutral pin
E – earth pin
(ii) The function of the fuse box in household electrical wiring
• The fuse box houses and controls the incoming electrical service and distribution to circuits within the house.
• It provides protection against power fluctuation through the use of fuses
(b) Four classes of insect pest based on their feeding habits
• Piercing & sucking insects (eg, aphids, mosquitoes)
• Chewing insects (eg, grasshoppers, beetles, weevils)
• Siphoning insects (eg, moths, butterflies)
• Sponging insects (eg, housefly)
(c) Classification of the first four elements of the periodic table
METALS NON-METALS
Lithium – Metals
Beryllium – Metals
Hydrogen – Non-Metal
Helium – Non-Metal
(d) The three types of blood vessels in humans
• Capillaries
• Veins
• Arteries
Question 2
(a) Classify the following chemical substances based on their uses
under the headings as shown in the table below:
Milk of magnesia, alcohol, paracetamol, sodium hydroxide, N.P.K.
Agriculture
Industry
Medicine
(b) State one use each of the following instruments used in the study of the weather:
(i) rain gauge;
(ii) hygrometer;
(iii) anemometer.
(c) (i) Name two types of transistors.
(ii) Draw and label the circuit symbols of the transistors named in (i)
(d) State three reasons why vegetable farming is important.
Answers
(a) Classification of:
Milk of magnesia, alcohol, paracetamol, sodium hydroxide, N.P.K.
Agriculture – N.P.K
Industry -Alcohol, Sodium hydroxide
Medicine – Milk of magnesia, Paracetamol
(b) One use each of the following instruments
(i) rain gauge – To measure the amount of rainfall
(ii) hygrometer – To measure the atmospheric humidity
(iii) anemometer – To measure the speed of wind
(c) (i) Types of transistors.
• PNP transistor
• NPN transistor
(ii) Circuit symbol of PNP transistor
(d) Reasons why vegetable farming is important.
• Source of employment – Income generation or wealth creation
• Foreign exchange earner for the nation, when exported.
• Provision of nutrition for man – Vegetables are very rich in essential vitamins, mineral salts and proteins.
• Certain vegetables help to conserve soil fertility
• Provides raw material for the food processing industry
• Certain vegetables are used in the pharmaceutical industry
• Vegetable take a shorter time to mature, hence it provides greater
returns per given time and space.
Question 3
(a) The funnels in the diagram below contain equal amounts of different types of soils labelled K, L and M. Equal volumes of water were poured onto each soil at the same time and allowed to drain for 20 minutes.
Study the diagram and answer the questions that follow.
(i) What is the aim of the experiment?
(ii) Which soil has the highest rate of drainage?
(iii) Which soil has the highest water retention capacity?
(iv) Which soil is most likely to lose water and dry faster after rainfall?
(v) Which soil is most likely to be waterlogged after rainfall?
(vi) Which of the soil types would be suitable for maize cultivation?
Answers
(a) (i) The aim of the experiment – To determine the drainage ability water-holding capacity of the soils
(ii) Soil with the highest rate of drainage – Soil K
(iii) Soil with the highest water retention capacity – Soil M
(iv) The soil most likely to lose water and dry faster after rainfall – Soil K
(v) The soil most likely to be waterlogged after rainfall – Soil M
(vi) Which of the soil types would be suitable for maize cultivation – Soil L
Question 4.
(a) The diagram below illustrates hazard symbols labelled I, II, III, and IV. Study the diagram carefully and answer the questions that follow.
(i) What does each of the symbols labelled I, II, III and IV represent?
(ii) Name one substance each that is associated with:
(α) I;
(β) II;
(γ) III.
(iii) Name a place where the hazard symbol labelled IV is often displayed
(iv) Which of the symbol(s) is / are found on chemical containers?
Answers
(i) What each of the symbols labelled I, II, III and IV represent
I – Danger
II – Corrosive
III – Highly inflammable / highly flammable
IV – No naked flame
(ii) One substance each that is associated with:
(α) I; DDT, Hydrogen cyanide, Salicylic acid
(β) II; Concentrated Inorganic acids, such as HCl, H2SO4, HNO3,
Concentrated inorganic bases, such as NaOH, KOH, Ca(OH)2 Household bleach
(γ) III. Petrol, Kerosene, LPG, Perfume, Insecticides, Alcohol
(iii) A place where the hazard symbol labelled IV is often displayed
Gas Filling stations, Storage places of combustible substances
(iv) Symbol(s) found on chemical containers I, II and III